Blog de Victroniko

electrónica, DIY y más...

Wacom digitizer conversion: from HP TX2500 laptop to USB tablet (part 1)

With the closure due to COVID19, I've been looking at things I have accumulated over the years. One of them is a Wacom Bamboo Connect tablet, of which I do not have the special stylus. Looking compatible ones, prices start from CLP$35000 and up (roughly USD$45). Ugh.

I also found an HP Pavilion TX2500 laptop with a bad motherboard. This model has a Wacom digitizer built-in, and the stylus is in good shape! Being the same type it'll surely work with my Bamboo tablet right?... NOPE, even while being EMR-based like the original, it doesn't recognize it at all.

In the end I have 3 options:

  1. Make the Bamboo tablet and HP stylus work together in some way.
  2. Buy a new tablet and get rid of all this crap, making a hole in my wallet.
  3. Gut this laptop and put together a homemade digitizer tablet.

After a quick assessment, option 1 proved bothersome: the HP stylus has a small PCB inside with a pair of adjustale trimpots. This is a perfectly serviceable stylus and I'll hate to render it unusable tweaking things I don't even know. And option 2 isn't interesting, right? so...

Let's go for that 3rd option!

Solution to hangs on Acer E3-112 and other laptops with BayTrail CPUs

A few months ago I bought an Acer Aspire E3-112 laptop at bargain price, with a "little" problem ...

The seller stated that Windows 10 was randomly crashing even after many reinstalls, and he was unable to pinpoint why, so it might be a bad motherboard. I bought it mainly "for parts", but something caught my attention: AFAK, it seemed to work normally... At least in the BIOS and with a Slitaz Linux live-ISO that I usually boot for testing purposes.

The solution to the problem? seemingly easy, but a little more technical than it seems.

Repair: Sony Bravia KLV-37L500 TV

*Note: the following applies to ALL Sony TVs with EX2T chassis and L500 in the model name: KLV-26L500A, KLV-32L500A, KLV-37L500A etc. It MIGHT apply to other variants, but I can't make any claim to it.

It's been a while since I repaired these 2 TV sets (same models, different faults). I don't have many photos of the process, so it won't be a long entry. Rather it can be seen as a support guide in case of finding similar faults on same-model Bravias.

Teardown: T012 Bluetooth TWS Earphones

Some time ago, I bought these Bluetooth TWS headphones on Aliexpress, for my personal use. Unfortunately the size wasn't comfortable for me, they just keep popping out of my ears. Before saying goodbye, let's see what's inside ...

A new blog? In 2019?

Let's see ... this is my first blog, and I really don't know how to start. I think the most sensible thing is to explain why a blog in these times of social networks, Instagram and those things.

Over the years, my hobby has been electronics. I tend to visit flea markets looking for old & new stuff, something that piques my curiosity ... Partly for fun and partly for teh monies: many of the things I buy in bad condition, I do repair and sell for a profit  (giving a second life to something that could end up in the trash, polluting the planet even more).

I realized something. Despite having done many things, I do not have a record of what I do, which could serve me as well as others who seek the same knowledge...

And that's why this blog :)

Little by little I will upload all kinds of information ... teardowns, guides, photographs and the things that happen to me. Because memory is fragile and knowledge should be shared, don't you think?